[infinispan-issues] [JBoss JIRA] (ISPN-4187) LRU eviction algorithm does not evict the eldest entry

LRU eviction algorithm does not evict the eldest entry ------------------------------------------------------ Key: ISPN-4187 URL: https://issues.jboss.org/browse/ISPN-4187 Project: Infinispan Issue Type: Bug Components: Eviction Affects Versions: 7.0.0.Alpha2 Reporter: Martin Gencur Assignee: William Burns Labels: 630betablocker Fix For: 7.0.0.Alpha4 Attachments: server2.log The following test for JDBC cache stores fails: {code:java} @Test @WithRunningServer({@RunningServer(name = CONTAINER1, config = CONFIG_FETCH_STATE_1)}) public void testFetchState() throws Exception { try { mc1 = createMemcachedClient(server1); assertCleanCacheAndStore1(); mc1.set("k1", "v1"); mc1.set("k2", "v2"); mc1.set("k3", "v3"); assertNotNull(dbServer1.stringTable.getValueByKey("k1")); startContainer(controller, CONTAINER2, CONFIG_FETCH_STATE_2); mc2 = createMemcachedClient(server2); assertTrue(0 < server2.getCacheManager(MANAGER_NAME).getCache(CACHE_NAME).getNumberOfEntries()); //the cache store should fetch state from the others //since eviction.max-entries==2, first k2 and k3 is loaded from the other cache, then k1 is loaded //from the other cache's loader and thus k2 is evicted and ends up in a cache loader assertNull(dbServer2.stringTable.getValueByKey("k1")); assertEquals("v1", mc2.get("k1")); assertEquals("v2", mc2.get("k2")); assertNull(dbServer2.stringTable.getValueByKey("k1")); //^^^^^fails here, the K1 was evicted even though it was used recently //K3 was supposed to be evicted but it did not happen assertNull(dbServer2.stringTable.getValueByKey("k2")); assertCleanCacheAndStore2(); } finally { controller.stop(CONTAINER2); } } {code} This tests works properly if the following commit is reverted, so it was caused by this commit: https://github.com/infinispan/infinispan/commit/b190230d84beb41474bae0239... Note that there's another commit with the same name but different commit hash: b71da1c The test above can be run from https://github.com/chepa653/infinispan/tree/t_ISPN-3904 by going to server/integration/testsuite and running mvn clean verify -Dtest=StringBasedStoreMultinodeTest#testFetchState -Dlog.level.infinispan=TRACE